/*									tab:4
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	* All rights reserved.
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using System;
using System.Collections.Generic;

namespace mc_tester{
	/// <summary>
	/// Summary description for Crc.
	/// </summary>
	public class Crc {
		public static int calcByte(int crc, int b) {
			crc = crc ^ (int)b << 8;

			for (int i = 0; i < 8; i++) {
				if ((crc & 0x8000) == 0x8000)
					crc = crc << 1 ^ 0x1021;
				else
					crc = crc << 1;
			}
			return crc & 0xffff;
		}

		public static int calc(List<byte> packet, int index, int count) {
			int crc = 0;

			while (count > 0) {
				crc = calcByte(crc, packet[index++]);
				count--;
			}
			return crc;
		}

        public static int calc(List<byte> packet, int count)
        {
			return calc(packet, 0, count);
		}

        public static void set(List<byte> packet)
        {
			int crc = Crc.calc(packet, packet.Count - 2);

			packet[packet.Count - 2] = (byte) (crc & 0xFF);
			packet[packet.Count - 1] = (byte) ((crc >> 8) & 0xFF);
		}
	}
}
